Torch Down Roofing Installation
MULTI-LAYER PROTECTION | LICENSED CA #987654

Torch down roofing installation addresses flat and low-slope roof waterproofing requirements where single-ply membranes don't provide adequate redundancy. We install modified bitumen systems using heat-welded application on commercial buildings and low-slope residential roofs, and repair seam failures, blister formation, and granule loss on existing torch down roofs. This multi-layer system provides 15-20 year service life with proper maintenance.

When Torch Down Roofing Applies

Torch down roofing installation is appropriate when:

• Flat or low-slope roofs (0:12 to 3:12 pitch) require waterproofing systems
• Multi-layer redundancy needed for critical leak prevention on commercial buildings
• Heat welding provides superior seam strength versus adhesive or mechanical attachment
• Existing built-up roof substrate provides sound foundation for overlay installation
• Budget allows for premium flat roofing system with proven track record
• Fire safety requires torch-applied installation by certified technicians

When Torch Down Roofing Does NOT Apply

Torch down roofing may not be suitable for:

• Structures near combustible materials where open flame application poses fire risk
• Buildings with occupied spaces requiring no-flame installation methods
• Steep-slope applications where shingle or tile systems perform better
• Substrate conditions with wet insulation requiring full tear-off before installation
• Budget constraints limited to economy single-ply membrane solutions
• Climates with extreme temperature fluctuations causing bitumen degradation

Our Torch Down Evaluation

Our inspection and evaluation process assesses:

• Substrate integrity: Moisture scans to detect wet insulation requiring replacement
• Slope and drainage: Ponding water assessment and positive drainage verification
• Deck condition: Structural soundness of roof deck for new membrane installation
• Existing layers: Count of roof layers to determine if code permits overlay or requires tear-off
• Penetration details: HVAC units, vents, and roof access points requiring custom flashing
• Parapet and edge conditions: Wall flashing and termination bar requirements

Materials and System Options

Modified bitumen system specifications depend on building requirements and budget:

• Two-layer systems: Base sheet and granulated cap sheet for standard applications
• Three-layer systems: Additional interply sheet for high-traffic or critical areas
• SBS-modified: Styrene-butadiene-styrene polymers for flexibility in temperature extremes
• APP-modified: Atactic polypropylene for enhanced UV resistance and heat tolerance
• White granulated cap: Reflective surface for energy efficiency and cool roof compliance

Outcomes and Expectations

Torch down roof service life and performance characteristics:

• Service life ranges 15-20 years with proper installation and maintenance schedule
• Heat-welded seams create monolithic membrane stronger than material itself
• Granule loss over time normal; excessive loss indicates premature membrane failure
• Blistering occurs from moisture trapped beneath membrane during installation
• Seam repairs possible using heat reactivation; full membrane requires overlay or replacement
• Annual inspections recommended to detect and address minor issues before major leaks develop
• Manufacturer warranties typically 10-15 years; extended warranties available with approved contractors